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<div class="subTitle">org.apache.commons.math3.stat.descriptive</div>
<h2 title="Class AbstractUnivariateStatistic" class="title">Class AbstractUnivariateStatistic</h2>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">UnivariateStatistic</a>, <a href="../../../../../../org/apache/commons/math3/util/MathArrays.Function.html" title="interface in org.apache.commons.math3.util">MathArrays.Function</a></dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractStorelessUnivariateStatistic.html" title="class in org.apache.commons.math3.stat.descriptive">AbstractStorelessUnivariateStatistic</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/rank/Percentile.html" title="class in org.apache.commons.math3.stat.descriptive.rank">Percentile</a>, <a href="../../../../../../org/apache/commons/math3/stat/descriptive/moment/SemiVariance.html" title="class in org.apache.commons.math3.stat.descriptive.moment">SemiVariance</a></dd>
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<pre>public abstract class <span class="strong">AbstractUnivariateStatistic</span>
extends <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements <a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">UnivariateStatistic</a></pre>
<div class="block">Abstract base class for all implementations of the
 <a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive"><code>UnivariateStatistic</code></a> interface.
 <p>
 Provides a default implementation of <code>evaluate(double[]),</code>
 delegating to <code>evaluate(double[], int, int)</code> in the natural way.
 </p>
 <p>
 Also includes a <code>test</code> method that performs generic parameter
 validation for the <code>evaluate</code> methods.</p></div>
<dl><dt><span class="strong">Version:</span></dt>
  <dd>$Id: AbstractUnivariateStatistic.java 1588601 2014-04-19 01:27:33Z psteitz $</dd></dl>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#AbstractUnivariateStatistic()">AbstractUnivariateStatistic</a></strong>()</code>&nbsp;</td>
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<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>abstract <a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">UnivariateStatistic</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#copy()">copy</a></strong>()</code>
<div class="block">Returns a copy of the statistic with the same internal state.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#evaluate()">evaluate</a></strong>()</code>
<div class="block">Returns the result of evaluating the statistic over the stored data.</div>
</td>
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<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#evaluate(double[])">evaluate</a></strong>(double[]&nbsp;values)</code>
<div class="block">Returns the result of evaluating the statistic over the input array.</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>abstract double</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#evaluate(double[], int, int)">evaluate</a></strong>(double[]&nbsp;values,
        int&nbsp;begin,
        int&nbsp;length)</code>
<div class="block">Returns the result of evaluating the statistic over the specified entries
 in the input array.</div>
</td>
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<tr class="altColor">
<td class="colFirst"><code>double[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#getData()">getData</a></strong>()</code>
<div class="block">Get a copy of the stored data array.</div>
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<td class="colFirst"><code>protected double[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#getDataRef()">getDataRef</a></strong>()</code>
<div class="block">Get a reference to the stored data array.</div>
</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#setData(double[])">setData</a></strong>(double[]&nbsp;values)</code>
<div class="block">Set the data array.</div>
</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#setData(double[], int, int)">setData</a></strong>(double[]&nbsp;values,
       int&nbsp;begin,
       int&nbsp;length)</code>
<div class="block">Set the data array.</div>
</td>
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<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#test(double[], double[], int, int)">test</a></strong>(double[]&nbsp;values,
    double[]&nbsp;weights,
    int&nbsp;begin,
    int&nbsp;length)</code>
<div class="block">This method is used by <code>evaluate(double[], double[], int, int)</code> methods
 to verify that the begin and length parameters designate a subarray of positive length
 and the weights are all non-negative, non-NaN, finite, and not all zero.</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#test(double[], double[], int, int, boolean)">test</a></strong>(double[]&nbsp;values,
    double[]&nbsp;weights,
    int&nbsp;begin,
    int&nbsp;length,
    boolean&nbsp;allowEmpty)</code>
<div class="block">This method is used by <code>evaluate(double[], double[], int, int)</code> methods
 to verify that the begin and length parameters designate a subarray of positive length
 and the weights are all non-negative, non-NaN, finite, and not all zero.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#test(double[], int, int)">test</a></strong>(double[]&nbsp;values,
    int&nbsp;begin,
    int&nbsp;length)</code>
<div class="block">This method is used by <code>evaluate(double[], int, int)</code> methods
 to verify that the input parameters designate a subarray of positive length.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#test(double[], int, int, boolean)">test</a></strong>(double[]&nbsp;values,
    int&nbsp;begin,
    int&nbsp;length,
    boolean&nbsp;allowEmpty)</code>
<div class="block">This method is used by <code>evaluate(double[], int, int)</code> methods
 to verify that the input parameters designate a subarray of positive length.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li>
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<h4>AbstractUnivariateStatistic</h4>
<pre>public&nbsp;AbstractUnivariateStatistic()</pre>
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<h4>setData</h4>
<pre>public&nbsp;void&nbsp;setData(double[]&nbsp;values)</pre>
<div class="block">Set the data array.
 <p>
 The stored value is a copy of the parameter array, not the array itself.
 </p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - data array to store (may be null to remove stored data)</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#evaluate()"><code>evaluate()</code></a></dd></dl>
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<pre>public&nbsp;double[]&nbsp;getData()</pre>
<div class="block">Get a copy of the stored data array.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>copy of the stored data array (may be null)</dd></dl>
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<h4>getDataRef</h4>
<pre>protected&nbsp;double[]&nbsp;getDataRef()</pre>
<div class="block">Get a reference to the stored data array.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>reference to the stored data array (may be null)</dd></dl>
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<pre>public&nbsp;void&nbsp;setData(double[]&nbsp;values,
           int&nbsp;begin,
           int&nbsp;length)
             throws <a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">Set the data array.  The input array is copied, not referenced.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - data array to store</dd><dd><code>begin</code> - the index of the first element to include</dd><dd><code>length</code> - the number of elements to include</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if values is null or the indices
 are not valid</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#evaluate()"><code>evaluate()</code></a></dd></dl>
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<h4>evaluate</h4>
<pre>public&nbsp;double&nbsp;evaluate()
                throws <a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">Returns the result of evaluating the statistic over the stored data.
 <p>
 The stored array is the one which was set by previous calls to <a href="../../../../../../org/apache/commons/math3/stat/descriptive/AbstractUnivariateStatistic.html#setData(double[])"><code>setData(double[])</code></a>.
 </p></div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the value of the statistic applied to the stored data</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if the stored data array is null</dd></dl>
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<h4>evaluate</h4>
<pre>public&nbsp;double&nbsp;evaluate(double[]&nbsp;values)
                throws <a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">Returns the result of evaluating the statistic over the input array.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html#evaluate(double[])">evaluate</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">UnivariateStatistic</a></code></dd>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/util/MathArrays.Function.html#evaluate(double[])">evaluate</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/commons/math3/util/MathArrays.Function.html" title="interface in org.apache.commons.math3.util">MathArrays.Function</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - input array</dd>
<dt><span class="strong">Returns:</span></dt><dd>the value of the statistic applied to the input array</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if values is null</dd></dl>
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<h4>evaluate</h4>
<pre>public abstract&nbsp;double&nbsp;evaluate(double[]&nbsp;values,
              int&nbsp;begin,
              int&nbsp;length)
                         throws <a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">Returns the result of evaluating the statistic over the specified entries
 in the input array.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html#evaluate(double[], int, int)">evaluate</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">UnivariateStatistic</a></code></dd>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/util/MathArrays.Function.html#evaluate(double[], int, int)">evaluate</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/commons/math3/util/MathArrays.Function.html" title="interface in org.apache.commons.math3.util">MathArrays.Function</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - the input array</dd><dd><code>begin</code> - the index of the first element to include</dd><dd><code>length</code> - the number of elements to include</dd>
<dt><span class="strong">Returns:</span></dt><dd>the value of the statistic applied to the included array entries</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if values is null or the indices are invalid</dd></dl>
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<pre>public abstract&nbsp;<a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">UnivariateStatistic</a>&nbsp;copy()</pre>
<div class="block">Returns a copy of the statistic with the same internal state.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html#copy()">copy</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/commons/math3/stat/descriptive/UnivariateStatistic.html" title="interface in org.apache.commons.math3.stat.descriptive">UnivariateStatistic</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>a copy of the statistic</dd></dl>
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<h4>test</h4>
<pre>protected&nbsp;boolean&nbsp;test(double[]&nbsp;values,
           int&nbsp;begin,
           int&nbsp;length)
                throws <a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">This method is used by <code>evaluate(double[], int, int)</code> methods
 to verify that the input parameters designate a subarray of positive length.
 <p>
 <ul>
 <li>returns <code>true</code> iff the parameters designate a subarray of
 positive length</li>
 <li>throws <code>MathIllegalArgumentException</code> if the array is null or
 or the indices are invalid</li>
 <li>returns <code>false</li> if the array is non-null, but
 <code>length</code> is 0.
 </ul></p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - the input array</dd><dd><code>begin</code> - index of the first array element to include</dd><dd><code>length</code> - the number of elements to include</dd>
<dt><span class="strong">Returns:</span></dt><dd>true if the parameters are valid and designate a subarray of positive length</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if the indices are invalid or the array is null</dd></dl>
</li>
</ul>
<a name="test(double[], int, int, boolean)">
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<h4>test</h4>
<pre>protected&nbsp;boolean&nbsp;test(double[]&nbsp;values,
           int&nbsp;begin,
           int&nbsp;length,
           boolean&nbsp;allowEmpty)
                throws <a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">This method is used by <code>evaluate(double[], int, int)</code> methods
 to verify that the input parameters designate a subarray of positive length.
 <p>
 <ul>
 <li>returns <code>true</code> iff the parameters designate a subarray of
 non-negative length</li>
 <li>throws <code>IllegalArgumentException</code> if the array is null or
 or the indices are invalid</li>
 <li>returns <code>false</li> if the array is non-null, but
 <code>length</code> is 0 unless <code>allowEmpty</code> is <code>true</code>
 </ul></p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - the input array</dd><dd><code>begin</code> - index of the first array element to include</dd><dd><code>length</code> - the number of elements to include</dd><dd><code>allowEmpty</code> - if <code>true</code> then zero length arrays are allowed</dd>
<dt><span class="strong">Returns:</span></dt><dd>true if the parameters are valid</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if the indices are invalid or the array is null</dd><dt><span class="strong">Since:</span></dt>
  <dd>3.0</dd></dl>
</li>
</ul>
<a name="test(double[], double[], int, int)">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>test</h4>
<pre>protected&nbsp;boolean&nbsp;test(double[]&nbsp;values,
           double[]&nbsp;weights,
           int&nbsp;begin,
           int&nbsp;length)
                throws <a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">This method is used by <code>evaluate(double[], double[], int, int)</code> methods
 to verify that the begin and length parameters designate a subarray of positive length
 and the weights are all non-negative, non-NaN, finite, and not all zero.
 <p>
 <ul>
 <li>returns <code>true</code> iff the parameters designate a subarray of
 positive length and the weights array contains legitimate values.</li>
 <li>throws <code>IllegalArgumentException</code> if any of the following are true:
 <ul><li>the values array is null</li>
     <li>the weights array is null</li>
     <li>the weights array does not have the same length as the values array</li>
     <li>the weights array contains one or more infinite values</li>
     <li>the weights array contains one or more NaN values</li>
     <li>the weights array contains negative values</li>
     <li>the start and length arguments do not determine a valid array</li></ul>
 </li>
 <li>returns <code>false</li> if the array is non-null, but
 <code>length</code> is 0.
 </ul></p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - the input array</dd><dd><code>weights</code> - the weights array</dd><dd><code>begin</code> - index of the first array element to include</dd><dd><code>length</code> - the number of elements to include</dd>
<dt><span class="strong">Returns:</span></dt><dd>true if the parameters are valid and designate a subarray of positive length</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if the indices are invalid or the array is null</dd><dt><span class="strong">Since:</span></dt>
  <dd>2.1</dd></dl>
</li>
</ul>
<a name="test(double[], double[], int, int, boolean)">
<!--   -->
</a>
<ul class="blockListLast">
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<h4>test</h4>
<pre>protected&nbsp;boolean&nbsp;test(double[]&nbsp;values,
           double[]&nbsp;weights,
           int&nbsp;begin,
           int&nbsp;length,
           boolean&nbsp;allowEmpty)
                throws <a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">This method is used by <code>evaluate(double[], double[], int, int)</code> methods
 to verify that the begin and length parameters designate a subarray of positive length
 and the weights are all non-negative, non-NaN, finite, and not all zero.
 <p>
 <ul>
 <li>returns <code>true</code> iff the parameters designate a subarray of
 non-negative length and the weights array contains legitimate values.</li>
 <li>throws <code>MathIllegalArgumentException</code> if any of the following are true:
 <ul><li>the values array is null</li>
     <li>the weights array is null</li>
     <li>the weights array does not have the same length as the values array</li>
     <li>the weights array contains one or more infinite values</li>
     <li>the weights array contains one or more NaN values</li>
     <li>the weights array contains negative values</li>
     <li>the start and length arguments do not determine a valid array</li></ul>
 </li>
 <li>returns <code>false</li> if the array is non-null, but
 <code>length</code> is 0 unless <code>allowEmpty</code> is <code>true</code>.
 </ul></p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - the input array.</dd><dd><code>weights</code> - the weights array.</dd><dd><code>begin</code> - index of the first array element to include.</dd><dd><code>length</code> - the number of elements to include.</dd><dd><code>allowEmpty</code> - if <code>true</code> than allow zero length arrays to pass.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>true</code> if the parameters are valid.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/NullArgumentException.html" title="class in org.apache.commons.math3.exception">NullArgumentException</a></code> - if either of the arrays are null</dd>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if the array indices are not valid,
 the weights array contains NaN, infinite or negative elements, or there
 are no positive weights.</dd><dt><span class="strong">Since:</span></dt>
  <dd>3.0</dd></dl>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
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